The trickling filter at a sewage treatment plant works by
A) passing wastewater through fine sand and then mechanically removing fine pollution particles.
B) passing wastewater through a thick bed of rocks that contains chemicals that sterilize the water and neutralize chemical pollutants.
C) passing wastewater through a thick bed of rocks where biofilms of bacteria and fungi on the rocks remove much of the organic material dissolved in the wastewater.
D) adding fertilizer to wastewater and then passing it through a culture medium that is rich in oil-eating prokaryotes.
Answer: C
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You are genetic counselor, and a couple comes to you with concerns that if they have a child together
it could have cystic fibrosis. Genetic tests reveal that the woman is a carrier for cystic fibrosis but the man is not. Which of the following would be a correct thing to tell them?
a. Any child that they produce has a 50% chance of having cystic fibrosis, and the rest will be carriers. b. All of their offspring will have cystic fibrosis. c. They should not have any concerns, as no child that they produce should wind up with cystic fibrosis. d. No child that they produce should wind up with cystic fibrosis, but each of their offspring will have a 50% chance of being a carrier. e. Any child that they produce will have a 25% chance of having cystic fibrosis.
There are how many different kinds of amino acids
in proteins? a. 3 b. 6 c. 12 d. 20 e. 28
The nonprotein component of an enzyme that is firmly attached to the protein is called a(n) ________.
A. prosthetic group B. coenzyme C. apoenzyme D. holoenzyme
Explain how the resulting phenotypic ratios from Mendel's dihybrid cross assisted him in framing his Second Law
What will be an ideal response?